ATEPA LIGHT 1200 Envelope high-quality sleeping bag is ideal for camping, hiking, backpacking, traveling and mountaineering. The lightweight sleeping bag is machine washable. Left zip and Right zip sleeping bag can be joined together to become a double sleeping bag. Full-length insulated draft tube prevents heat loss through the zipper. Full-length zipper webbing protects against snags. An adjustable drawstring collar helps lock in heat. Convenient internal pocket with velcro closure to hold a flashlight, wallet， keys, watch and other valuables. Portable, space-saving, and easy to roll up into the stuff bag.